CN114523091A - Chute for smelting high-purity high-temperature alloy master alloy and application thereof - Google Patents
Chute for smelting high-purity high-temperature alloy master alloy and application thereof Download PDFInfo
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- CN114523091A CN114523091A CN202111571898.4A CN202111571898A CN114523091A CN 114523091 A CN114523091 A CN 114523091A CN 202111571898 A CN202111571898 A CN 202111571898A CN 114523091 A CN114523091 A CN 114523091A
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 126
- 239000000956 alloy Substances 0.000 title claims abstract description 126
- 238000003723 Smelting Methods 0.000 title claims abstract description 27
- 239000002893 slag Substances 0.000 claims abstract description 107
- 239000007788 liquid Substances 0.000 claims abstract description 63
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 7
- 229910000601 superalloy Inorganic materials 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000003628 erosive effect Effects 0.000 abstract description 3
- 101100204059 Caenorhabditis elegans trap-2 gene Proteins 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 238000005266 casting Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
- B22D1/007—Treatment of the fused masses in the supply runners
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention belongs to the technical field of alloy smelting, and particularly relates to a chute for smelting a high-purity high-temperature alloy master alloy and application thereof. The chute comprises a chute shell, a pouring gate is arranged at the bottom of the chute shell, a sheet slag trap is arranged at the liquid inlet side of the pouring gate in the chute shell, a first filter screen and a second filter screen are sequentially arranged between the sheet slag trap and the pouring gate, the chute further comprises an L-shaped slag trap connected to the inner wall of the chute shell, the L-shaped slag trap is arranged below the sheet slag trap, the first filter screen is connected with the upper surface of the horizontal part of the L-shaped slag trap and the inner wall of the chute shell, and the sheet slag trap and the second filter screen are connected to the inner wall of the chute shell. The invention has simple structure, the chute adopts a double-channel design, can carry out split-flow treatment on the alloy liquid, reduces the pouring time, has small temperature drop of the alloy liquid, can reduce the erosion effect of the alloy liquid on the slag trap, and improves the slag-stopping and filtering effects, thereby improving the purity of the high-temperature alloy.
Description
Technical Field
The invention belongs to the technical field of high-temperature alloy smelting, and particularly relates to a chute for smelting a high-purity high-temperature alloy master alloy and application thereof.
Background
With the continuous improvement of the performances of aero-engines and gas turbines, the performance requirement of a high-temperature alloy, which is a core hot end part material of the aero-engines and the gas turbines, is more and more strict, and the improvement of the purity of the alloy is one of the most effective measures. The purity of the high-temperature alloy mainly comprises three indexes of impurity element content, inclusion and scum content. The control of impurity elements is mainly controlled by taking measures in the raw materials and the vacuum induction smelting process, and besides the control of dross and inclusions in the smelting process, the transfer of molten liquid through a chute in the vacuum induction furnace is also the most important control method. In the vacuum induction melting preparation process of the chute, the alloy liquid is transferred from the crucible to the inside of the mold through the chute, so that the impurities in the alloy liquid are removed.
After the alloy is refined in the crucible, filtering and deslagging the alloy liquid through a chute, and finally draining the alloy liquid into a casting mold to finish the casting of the alloy. In the smelting process, after the alloy liquid is injected into the chute, the existing chute mainly has the following problems: (1) impurities in the alloy liquid cannot float to the surface of the alloy liquid at once, so that the slag blocking effect of the slag blocking plate is poor, the filter screen is ineffective due to blockage of the filter screen by large-particle impurities in the alloy liquid, the alloy liquid flows over the filter screen, and the impurities enter the module along with the alloy liquid, so that the impurities in the alloy are scrapped due to the fact that the content of the impurities in the alloy is ultra-poor; (2) the alloy liquid can only pass through a single channel below the slag trap, the passing efficiency is low, the time is long, the alloy temperature is greatly reduced, the viscosity of the alloy liquid is increased, the problem of blockage of a filter screen or a pouring gate is easily caused, and the waste of the alloy liquid in a chute and the chute is finally caused; (3) after the alloy liquid is poured into the chute from the crucible, the slag trap is easy to cause the refractory material of the slag trap to fall off and enter the alloy liquid under the long-time erosion action of the alloy liquid at higher temperature, and finally the refractory material exists in the mother alloy ingot in the form of inclusion, so that the alloy ingot is scrapped due to the existence of more and larger inclusions.
Disclosure of Invention
The invention aims to provide a chute for smelting a high-purity high-temperature alloy master alloy and application thereof, aiming at the defects of the prior art. The invention is provided with the L-shaped slag trap, when alloy liquid flows through the chute, the chute has a double-channel design, so that the alloy can be subjected to split-flow treatment, and the following technical effects can be realized: (1) the slag blocking and filtering effects are improved, and the purpose of fully purifying the alloy is achieved; (2) the alloy liquid flow channel is increased, the pouring time is reduced, and the temperature of the alloy liquid is reduced; (3) the residence time of the alloy liquid in the chute is shortened, the erosion effect of the alloy liquid on the slag trap is reduced, and the falling of refractory materials of the slag trap can be reduced, so that the purity of the high-temperature alloy is improved.
In order to achieve the technical purpose, the embodiment of the invention adopts the technical scheme that:
on one hand, the embodiment of the invention provides a chute for smelting high-purity high-temperature alloy mother alloy, which comprises a chute shell, wherein a pouring gate is arranged at the bottom of the chute shell, a sheet slag trap is arranged at the liquid inlet side of the pouring gate in the chute shell, a first filter screen and a second filter screen are sequentially arranged between the sheet slag trap and the pouring gate, the chute shell further comprises an L-shaped slag trap connected to the inner wall of the chute shell, the L-shaped slag trap comprises a horizontal part and a vertical part, the L-shaped slag trap is arranged below the sheet slag trap, the first filter screen is connected with the upper surface of the horizontal part of the L-shaped slag trap and the inner wall of the chute shell, and the sheet slag trap and the second filter screen are connected to the inner wall of the chute shell.
Further, the length of chute shell is 600~1200mm, and the width is 200~400mm, and the degree of depth is 200~500mm, and the wall thickness is 10~60 mm.
Furthermore, the L-shaped slag trap and the chute shell are integrally formed, the length of the horizontal part of the L-shaped slag trap and the chute shell is 1/3 of the length of the chute shell, the distance between the horizontal part and the bottom of the chute shell is 10-30 mm, the distance between the vertical part of the L-shaped slag trap and the alloy liquid injection end is 1/4-1/3 of the length of the chute shell, and the height of the vertical part of the L-shaped slag trap and the height of the chute shell are 1/4-1/3 of the depth of the chute shell.
Furthermore, the sheet slag trap is fixedly installed through a groove reserved on the chute shell, and the distance between the sheet slag trap and the vertical part of the L-shaped slag trap is 1/3 of the length of the horizontal part of the L-shaped slag trap.
Further, the first filter screen is fixedly installed through a groove reserved in the chute shell, and the distance between the first filter screen and the sheet-shaped slag trap is 1/3 the length of the horizontal part of the L-shaped slag trap.
Furthermore, the second filter screen is fixedly installed through a groove reserved in the chute shell, is located behind the tail end of the L-shaped slag baffle, and is 1/4 the length of the chute shell from the distance between the second filter screen and the end, close to the pouring gate, of the chute.
Further, the pore density of the first filter screen is 10-15 PPI, and the pore density of the second filter screen is 15-30 PPI.
Furthermore, the diameter of the pouring gate is 10-40 mm.
On the other hand, the embodiment of the invention provides a method for casting an alloy ingot by using the chute, which comprises the following steps:
s1, after the chute is installed and dedusted, baking the chute at 800-1000 ℃ for 2-5 h;
step S2, after the step S1 is completed, 5-10 min before the alloy liquid starts to be poured, and the roasted chute is sent into a vacuum induction furnace;
and S3, finishing alloy smelting, adjusting the temperature of the molten alloy to 1450-1550 ℃, pouring the alloy liquid into the chute, stopping slag and filtering the alloy liquid through the chute, and injecting the alloy liquid into the module through a pouring gate of the chute to finish the pouring preparation of the alloy ingot.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
(1) the chute of this application embodiment simple structure, L type slag trap and chute shell integrated into one piece, convenient operation only need before the use with slice slag trap, first filter screen and second filter screen install in the corresponding reservation groove position of chute can.
(2) The L-shaped baffle plate is adopted to shunt the alloy liquid with more scum poured into the middle upper part of the chute to the upper part of the L-shaped slag trap, then the scum floating on the upper part of the alloy liquid in the alloy liquid is further removed through secondary slag trap of the sheet-shaped slag trap, and then the fine scum in the alloy liquid is removed through slag hanging through the first filter screen and the second filter screen in sequence; alloy liquid with less scum at the lower part is shunted to the lower part of the L-shaped slag baffle, and the less scum in the alloy liquid is removed by hanging scum through the second filter screen, thereby realizing the high-efficiency filtration and purification of the alloy liquid.
(3) The first filter screen and the second filter screen of two specifications are combined for use, so that the content of scum in the alloy liquid can be obviously reduced, and the purity of the alloy is improved.
Drawings
FIG. 1 is a top view of a chute in an embodiment of the invention.
Figure 2 is a cross-sectional view a-a of the trough of figure 1.
Fig. 3 is a schematic view of the structure of a conventional chute in a comparative example.
Description of reference numerals: 1-chute housing; 2-L-shaped slag trap; 3-a sheet slag trap; 4-a first filter screen; 5-a second filter screen; 6-chute pouring gate; 2.1-horizontal part; 2.2-vertical section.
Detailed Description
The technical scheme of the invention is further explained by combining the specific drawings and the embodiment.
Example 1
As shown in fig. 1-2, a chute for high-purity superalloy mother alloy is smelted, including chute shell 1, the bottom of chute shell 1 is provided with circular sprue gate 6, be located in chute shell 1 the feed liquor side of sprue gate 6 is provided with slice slag trap 3, first filter screen 4 and second filter screen 5 have set gradually between slice slag trap 3 and the sprue gate 6, still including connecting L type slag trap 2 on the chute shell 1 inner wall, L type slag trap includes horizontal part 2.1 and vertical part 2.2, L type slag trap 2 sets up the below of slice slag trap 3, first filter screen 4 with L type slag trap horizontal part 2.1 upper surface and the interior wall connection of chute shell 1, slice slag trap 3 and second filter screen 5 are connected on the inner wall of chute shell 1.
The length of the chute shell 1 is 800mm, the width is 300mm, the depth is 260mm, and the wall thickness is 30 mm.
The L-shaped slag trap 2 and the chute shell 1 are integrally formed, the length of a horizontal part 2.1 of the L-shaped slag trap is 1/3 of the total length of the chute shell 1, and the distance between the horizontal part 2.1 and the bottom of the chute shell 1 is 15 mm; the distance between the vertical part of the furnace and the alloy liquid injection end is 1/3 of the length of the chute shell 1, and the height of the vertical part 2.2 is 1/4 of the depth of the chute shell 1. The L-shaped slag trap plays a role in first diversion of alloy liquid.
The slice slag trap 3 passes through the recess installation of reserving on the chute shell 1 is fixed, slice slag trap 3 distance the length of L type slag trap vertical part 2.2 is 1/3 of L type slag trap horizontal part 2.1 length. The flaky slag trap plays a role in secondary flow distribution of the alloy liquid.
The first filter screen 4 is fixedly installed through a groove reserved on the chute shell 1, and the distance between the first filter screen 4 and the flaky slag trap 3 is 1/3 of 2.1 of the horizontal part of the L-shaped slag trap.
The second filter screen 5 is fixedly installed through a groove reserved in the chute shell 1, is located behind the tail end of the L-shaped slag trap 2, and is 1/4 the length of the chute shell 1 from the end, close to the pouring gate 6, of the chute.
The first filter 4 has a pore density of 10PPI and the second filter 5 has a pore density of 20 PPI. The hole density of the first filter screen 4 is smaller than that of the second filter screen 5, and the combined use of the first filter screen and the second filter screen with two specifications can obviously reduce the content of scum in the alloy liquid and improve the purity of the alloy.
The diameter of the pouring gate 6 is 20 mm.
The method for casting the alloy ingot by using the chute comprises the following steps:
step S1, after the chute is installed and dedusted, baking the chute at 950 ℃ for 3 h;
step S2, after the step S1 is completed, 5min before the alloy liquid starts to be poured, and the baked chute is sent into a vacuum induction furnace;
and step S3, finishing alloy smelting, adjusting the temperature of the molten liquid to 1500 ℃, pouring the alloy liquid into a chute, stopping slag and filtering the alloy liquid through the chute, and injecting the alloy liquid into the module through a pouring gate of the chute to finish the pouring preparation of the alloy ingot.
The furnace of the embodiment is used for completing the smelting preparation of 5 batches of INCO713C master alloy ingots.
Example 2
The utility model provides a chute for high-purity superalloy mother alloy is smelted, includes chute shell 1, the bottom of chute shell 1 is provided with circular sprue gate 6, lie in chute shell 1 the feed liquor side of sprue gate 6 is provided with slice slag trap 3, first filter screen 4 and second filter screen 5 have set gradually between slice slag trap 3 and the sprue gate 6, still including connecting L type slag trap 2 on the chute shell 1 inner wall, L type slag trap includes horizontal part 2.1 and vertical part 2.2, L type slag trap 2 sets up the below of slice slag trap 3, first filter screen 4 with L type slag trap horizontal part 2.1 upper surface and the 1 interior wall connection of chute shell, slice slag trap 3 and second filter screen 5 are connected on the inner wall of chute shell 1.
The length of the chute shell 1 is 800mm, the width is 300mm, the depth is 260mm, and the wall thickness is 30 mm.
The L-shaped slag trap 2 and the chute shell 1 are integrally formed, the length of a horizontal part 2.1 of the L-shaped slag trap is 1/3 of the total length of the chute shell 1, and the distance between the horizontal part 2.1 and the bottom of the chute shell 1 is 20 mm; the distance between the vertical part of the furnace body and the alloy liquid injection end is 1/3 of the length of the chute shell 1, and the height of the vertical part is 1/4 of the depth of the chute shell 1. The L-shaped slag trap plays a role in first diversion of alloy liquid.
The flaky slag trap 3 is fixedly installed through a groove reserved on the chute shell 1, and the distance between the flaky slag trap 3 and the L-shaped slag trap vertical part 2.2 is 1/3 of the L-shaped slag trap horizontal part 2.1. The flaky slag trap plays a role in secondary flow distribution of the alloy liquid.
The first filter screen 4 is fixedly installed through a groove reserved on the chute shell 1, and the distance between the first filter screen 4 and the flaky slag trap 3 is 1/3 of 2.1 of the horizontal part of the L-shaped slag trap.
The second filter screen 5 is fixedly installed through a groove reserved in the chute shell 1, is located behind the tail end of the L-shaped slag trap 2, and is 1/4 the length of the chute shell 1 from the end, close to the pouring gate 6, of the chute.
The first filter 4 has a pore density of 15PPI and the second filter 5 has a pore density of 20 PPI. The first filter screen and the second filter screen of two specifications are combined for use, so that the content of scum in the alloy can be obviously reduced, and the purity of the alloy is improved.
The diameter of the pouring gate 6 is 22 mm.
The method for casting the alloy ingot by using the chute comprises the following steps:
step S1, after the chute is installed and dedusted, baking the chute at 900 ℃ for 4 h;
step S2, after the step S1 is completed, 6min before the alloy liquid starts to be poured, and the baked chute is sent into a vacuum induction furnace;
and step S3, finishing alloy smelting, adjusting the temperature of the molten liquid to 1520 ℃, pouring the alloy liquid into a chute, stopping slag and filtering the alloy liquid through the chute, and injecting the alloy liquid into the module through a pouring gate of the chute to finish the pouring preparation of the alloy ingot.
The furnace of this example was used to complete the preparation of 5 batches of IN738LC master alloy ingots by smelting.
Comparative example 1
Under the same other conditions as in example 1, the conventional chute shown in FIG. 3 is adopted to complete the smelting preparation of 5 batches of INCO713C master alloy ingots.
Comparative example 2
Under the same other conditions as IN example 2, 5 batches of IN738LC master alloy ingots were prepared by smelting using a conventional trough as shown IN FIG. 3.
The contents of inclusions and dross in the master alloy ingots prepared by using the chutes of example 1 and example 2 of the present invention and the conventional common chutes of comparative example 1 and comparative example 2 were measured and compared, and the comparison results are shown in table 1.
TABLE 1 comparison of master alloy ingots obtained in examples 1-2 and comparative examples 1-2
| Parameter(s) | Example 1 | Comparative example 1 | Example 2 | Comparative example 2 |
| Content of dross | 1％ | 1.5％ | 0.5％ | 1％ |
| Content of inclusions | Level 1 | 1.5 grade | Grade 0.5 | Level 1 |
Compared with the prior art, the chute for smelting the high-purity high-temperature alloy master alloy can effectively improve the purity of the high-temperature alloy master alloy by casting the alloy ingot.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (9)
1. The chute for smelting the high-purity high-temperature alloy master alloy comprises a chute shell (1), wherein a sprue gate (6) is arranged at the bottom of the chute shell (1), a sheet slag trap (3) is arranged at the liquid inlet side of the sprue gate (6) in the chute shell (1), a first filter screen (4) and a second filter screen (5) are sequentially arranged between the sheet slag trap (3) and the sprue gate (6), the chute is characterized by further comprising an L-shaped slag trap (2) connected to the inner wall of the chute shell (1), the L-shaped slag trap (2) comprises a horizontal part (2.1) and a vertical part (2.2), the L-shaped slag trap (2) is arranged below the sheet slag trap (3), the first filter screen (4) is connected with the upper surface of the horizontal part (2.1) of the L-shaped slag trap and the inner wall of the chute shell (1), the slice slag trap (3) and the second filter screen (5) are connected on the inner wall of the chute shell (1).
2. The chute for smelting high-purity high-temperature alloy master alloy as claimed in claim 1, wherein the length of the chute shell (1) is 600-1200 mm, the width is 200-400 mm, the depth is 200-500 mm, and the wall thickness is 10-60 mm.
3. The chute for smelting the high-purity high-temperature alloy master alloy as claimed in claim 1, wherein the L-shaped slag trap (2) is integrally formed with the chute shell (1), the length of a horizontal part (2.1) of the L-shaped slag trap is 1/3 of the length of the chute shell (1), the distance between the horizontal part (2.1) and the bottom of the chute shell (1) is 10-30 mm, the distance between a vertical part (2.2) of the L-shaped slag trap and an alloy liquid injection end of the L-shaped slag trap is 1/4-1/3 of the length of the chute shell (1), and the height of the vertical part (2.2) of the L-shaped slag trap is 1/4-1/3 of the depth of the chute shell (1).
4. The chute for smelting high-purity superalloy master alloy according to claim 1, wherein the sheet-shaped slag trap (3) is fixedly installed through a groove reserved in the chute shell (1), and the length of the sheet-shaped slag trap (3) from the L-shaped slag trap vertical portion (2.2) is 1/3 of the length of the L-shaped slag trap horizontal portion (2.1).
5. The chute for smelting high-purity superalloy master alloy according to claim 1, wherein the first filter screen (4) is fixedly installed through a groove reserved in the chute shell (1), and the distance between the first filter screen (4) and the sheet-shaped slag trap (3) is 1/3 the length of the horizontal part (2.1) of the L-shaped slag trap.
6. The chute for smelting high-purity superalloy master alloy according to claim 1, wherein the second filter screen (5) is fixedly installed through a groove reserved in the chute shell (1), is located behind the end of the L-shaped slag trap (2), and is located at 1/4 of the length of the chute shell (1) from the end of the chute close to the pouring gate (6).
7. The chute for high-purity superalloy smelting according to claim 1, wherein the first filter (4) has a pore density of 10-15 PPI, and the second filter (5) has a pore density of 15-30 PPI.
8. The chute for high-purity superalloy master alloy melting according to claim 1, wherein the diameter of the pouring gate (6) is 10-40 mm.
9. A method of pouring an alloy ingot using the chute of any one of claims 1 to 8, comprising the steps of:
s1, after the chute is installed and dedusted, baking the chute at 800-1000 ℃ for 2-5 h;
step S2, after the step S1 is completed, 5-10 min before the alloy liquid starts to be poured, and the roasted chute is sent into a vacuum induction furnace;
and S3, finishing alloy smelting, adjusting the temperature of the molten alloy to 1450-1550 ℃, pouring the alloy liquid into a chute, stopping slag and filtering the alloy liquid through the chute, and injecting the alloy liquid into the module through a pouring gate of the chute to finish the pouring preparation of the alloy ingot.
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| CN117226079A (en) * | 2023-11-10 | 2023-12-15 | 江苏大能金属科技有限公司 | Casting equipment is smelted in production of motor copper end ring |
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| CN206632349U (en) * | 2017-04-07 | 2017-11-14 | 江苏美特林科特殊合金股份有限公司 | High temperature alloy foundry alloy production chuting system |
| CN209124885U (en) * | 2018-07-10 | 2019-07-19 | 上海中振有色金属铸造有限公司 | A kind of molten aluminum diversion trench |
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| CN208929198U (en) * | 2018-10-19 | 2019-06-04 | 扬州华露机电制造有限公司 | A kind of continuous casting tundish being easy to deslagging |
| CN210098958U (en) * | 2019-03-25 | 2020-02-21 | 江苏省沙钢钢铁研究院有限公司 | Prefabricated shunt with pushing off slag effect |
| CN209918070U (en) * | 2019-04-18 | 2020-01-10 | 合肥华沃机电设备有限公司 | Cooling liquid recycling and filtering device of numerical control machine tool |
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| CN117226079A (en) * | 2023-11-10 | 2023-12-15 | 江苏大能金属科技有限公司 | Casting equipment is smelted in production of motor copper end ring |
| CN117226079B (en) * | 2023-11-10 | 2024-01-30 | 江苏大能金属科技有限公司 | Casting equipment is smelted in production of motor copper end ring |
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